#! /bin/sh
# Copyright (C) 2012-2021 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

# Check that $(am__make_dryrun) works as expected.

. test-init.sh

plan_ 60

if echo "all: ; +@printf %sbb%s aa cc" | $MAKE -n -f - | grep aabbcc; then
  make_plus_silence () { return 0; }
else
  make_plus_silence () { return 1; }
fi

mkdir none # Also used later.
if echo nil: | $MAKE -I none -f -; then
  make_supports_option_I () { return 0; }
else
  make_supports_option_I () { return 1; }
fi

echo AC_OUTPUT >> configure.ac

cat > Makefile.am <<'END'
all:
	: Dummy, nothing to do.
run:
	@echo ":: $$MAKEFLAGS :: $$MFLAGS ::" ;: For debugging.
	$(am__make_dryrun) && exit 1; echo ok > from-run
dry:
	+@echo ":: $$MAKEFLAGS :: $$MFLAGS ::" ;: For debugging.
	+$(am__make_dryrun) || exit 1; echo ok > from-dry
END

check_make ()
{
  msg= mode= condition=: directive= reason= skip_reason=
  case $1 in
    --dry) mode=dry;;
    --run) mode=run;;
    *) fatal_ "check_run: invalid usage";;
  esac
  shift
  while test $# -gt 0; do
    case $1 in
      -C) condition=$2 skip_reason=$3; shift; shift;;
      -M) msg=$2; shift;;
      --) shift; break;;
       *) break;;
    esac
    shift
  done
  for opts in '' '-s'  '-s -r'; do
    r=ok
    pmsg=${mode}${msg:+" [$msg]"}${opts:+" ($opts)"}
    if $condition; then
      $MAKE $opts "$mode" ${1+"$@"} || r='not ok'
      test -f from-$mode            || r='not ok'
      test ! -e bad                 || r='not ok'
      rm -f bad from-*              || fatal_ "cleaning up"
    else
      directive=SKIP reason=$skip_reason
    fi
    result_ "$r" -D "$directive" -r "$reason" "$pmsg"
  done
  unset r msg pmsg opts mode condition directive reason skip_reason
}

# ----------------------------------------------------------------------

$ACLOCAL    || fatal_ "aclocal failed"
$AUTOCONF   || fatal_ "autoconf failed"
$AUTOMAKE   || fatal_ "automake failed"
./configure || fatal_ "configure failed"

# ----------------------------------------------------------------------

check_make --run

# Test against a known regression.  This was especially heinous, since
# make running in normal mode was sometimes mistaken for make running
# in dry mode.
check_make --run TESTS="n1.test n2.test"
check_make --run TESTS="n1 n2" AM_MAKEFLAGS="TESTS='n1 n2'"
check_make --run TESTS="n1 n2" AM_MAKEFLAGS='TESTS="n1 n2"'
check_make --run FOOFLAGS="-n -n -knf2 n --none -n"
check_make --run MYFLAGS="-n --dryrun -n --dry-run -n"

# ----------------------------------------------------------------------

check_make --dry -C make_plus_silence 'recipe prefix "+" unsupported' -n
check_make --dry -C using_gmake "\$MAKE is not GNU make" --dry-run -k

# ----------------------------------------------------------------------

# Automake bug#13760: the "n" in "none" used to confound am__make_dryrun
# into thinking the '-n' option had been passed.

pr='bug#13760'

check_make --run -C make_supports_option_I "-I make option unsupported" \
                 -M "$pr" -I none

check_make --run -C using_gmake "\$MAKE is not GNU make" \
                 -M "$pr" -I none --include dry-run

check_make --dry -C make_supports_option_I "-I make option unsupported" \
                 -M "$pr" -I none -n

check_make --dry -C using_gmake "\$MAKE is not GNU make" \
                 -M "$pr" --dry-run -I none --include dry-run

# ----------------------------------------------------------------------

# Test for when shell metacharacters or backslashes are in $(MAKEFLAGS).

check_metachars ()
{
  check_make --run -M "metachars" "$@"
}

check_metachars MYFLAGS="-n \"n\" '-n' --none -n"
check_metachars MYFLAGS='-knf2\ n\ \\n'
check_metachars MYFLAGS="(&) | ; \" \` '"
check_metachars MYFLAGS=" ' # ' "
check_metachars MYFLAGS='$(foo)'
check_metachars MYFLAGS='$(foo -n)'
check_metachars MYFLAGS='`touch bad`'
check_metachars MYFLAGS='`touch --dry-run bad`'

# ----------------------------------------------------------------------

:
